CAJ | 학술논문

立足于定向红外对抗系统（DIRCM）的干扰性能的研究，将目标导引头红外焦平面功率密度和系统持续照射目标时的照射容差角作为评价定向红外对抗系统干扰性能的两个指标。综合考虑大气传输透过率和光束传输过程中光束自身衍射效应与大气湍流效应引起的光束发散角对目标导引头接收功率的影响，建立了定向红外干扰模型，模拟了定向红外对抗系统照射光束在目标导引头红外焦平面上的功率密度。利用概率论置信区间的概念，将目标中心相对于光束中心的距离偏离量转化为角量与光束发散角进行对比，建立了定向红外对抗系统的照射容差角模型。通过仿真，定量分析了照射距离、大气湍流强度、光束出射口径对目标导引头红外焦平面的功率密度和系统照射容差角的影响。
립족우정향홍외대항계통（DIRCM）적간우성능적연구，장목표도인두홍외초평면공솔밀도화계통지속조사목표시적조사용차각작위평개정향홍외대항계통간우성능적량개지표。종합고필대기전수투과솔화광속전수과정중광속자신연사효응여대기단류효응인기적광속발산각대목표도인두접수공솔적영향，건립료정향홍외간우모형，모의료정향홍외대항계통조사광속재목표도인두홍외초평면상적공솔밀도。이용개솔론치신구간적개념，장목표중심상대우광속중심적거리편리량전화위각량여광속발산각진행대비，건립료정향홍외대항계통적조사용차각모형。통과방진，정량분석료조사거리、대기단류강도、광속출사구경대목표도인두홍외초평면적공솔밀도화계통조사용차각적영향。
The jamming performance of DIRCMis studied,and the power density on the target′s IRFPA(infrared focal plane array)and the tolerance angle of system′s irradiating are regarded as two indexes to evaluate the DIRCM′s jam-ming performance.Considering the influence of the diffraction effect in the atmospheric transmittance and the beam divergence angle from turbulence effect on the power density of target′s IRFPA,the jamming model of DIRCMwas es-tablished,and the power density of target′s IRFPA from DIRCM′s irradiating beam was simulated.Then the tolerance angle model of DIRCM′s irradiating was established based on the concept of confidence interval.By simulating the two models,influences of irradiating distance,turbulence intensity and beam irradiating caliber on the power density of the target′s IRFPA and the tolerance angle of system are analyzed quantitatively.